제출 #939239

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
939239		vjudge1	Dango Maker (JOI18_dango_maker)	C++17	100 / 100	214 ms	40380 KiB

dango_maker

#include <bits/stdc++.h>  
using namespace std;
#pragma GCC target("avx2")
#pragma GCC optimize("Ofast") 
//#pragma comment(linker, "/stack:200000000") 
#pragma GCC target( "sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native" ) 
#pragma GCC optimize("unroll-loops")
/* 
#pragma GCC optimize("profile-values,profile-reorder-functions,tracer") 
#pragma GCC optimize("vpt") 
#pragma GCC optimize("rename-registers") 
#pragma GCC optimize("move-loop-invariants") 
#pragma GCC optimize("unswitch-loops") 
#pragma GCC optimize("function-sections") 
#pragma GCC optimize("data-sections") 
#pragma GCC optimize("branch-target-load-optimize") 
#pragma GCC optimize("branch-target-load-optimize2") 
#pragma GCC optimize("btr-bb-exclusive") 
#pragma GCC optimize("inline")
#pragma GCC optimize("-fgcse") 
#pragma GCC optimize("-fgcse-lm") 
#pragma GCC optimize("-fipa-sra") 
#pragma GCC optimize("-ftree-pre") 
#pragma GCC optimize("-ftree-vrp") 
#pragma GCC optimize("-fpeephole2") 
#pragma GCC optimize("-ffast-math") 
#pragma GCC optimize("-fsched-spec") 
#pragma GCC optimize("-falign-jumps") 
#pragma GCC optimize("-falign-loops") 
#pragma GCC optimize("-falign-labels") 
#pragma GCC optimize("-fdevirtualize") 
#pragma GCC optimize("-fcaller-saves") 
#pragma GCC optimize("-fcrossjumping") 
#pragma GCC optimize("-fthread-jumps") 
#pragma GCC optimize("-freorder-blocks") 
#pragma GCC optimize("-fschedule-insns") 
#pragma GCC optimize("inline-functions") 
#pragma GCC optimize("-ftree-tail-merge") 
#pragma GCC optimize("-fschedule-insns2") 
#pragma GCC optimize("-fstrict-aliasing") 
#pragma GCC optimize("-falign-functions") 
#pragma GCC optimize("-fcse-follow-jumps") 
#pragma GCC optimize("-fsched-interblock") 
#pragma GCC optimize("-fpartial-inlining") 
#pragma GCC optimize("no-stack-protector") 
#pragma GCC optimize("-freorder-functions") 
#pragma GCC optimize("-findirect-inlining") 
#pragma GCC optimize("-fhoist-adjacent-loads") 
#pragma GCC optimize("-frerun-cse-after-loop") 
#pragma GCC optimize("inline-small-functions") 
#pragma GCC optimize("-finline-small-functions") 
#pragma GCC optimize("-ftree-switch-conversion") 
#pragma GCC optimize("-foptimize-sibling-calls") 
#pragma GCC optimize("-fexpensive-optimizations") 
#pragma GCC optimize("inline-functions-called-once") 
#pragma GCC optimize("-fdelete-null-pointer-checks")
*/
#define ll long long 
#define all(x) x.begin(),x.end()
#define sz(x) (int) x.size()
#define f first
#define s second
#define ld long double
#define yes cout << "YES" << endl
#define no cout << "NO" << endl
#define pb push_back
#define dauzhan gay
#define popcount __builtin_popcount
const long double Eps = 1e-12; 
const int max1 = 1e9 + 100; 
const int min1 = -1e9 *1.4;
const ll mod1 = 1000000007;
const ll mod2 = 2000000011;
const ll mod3 = 3000000017;
const ll mod = 998244353;
const int N = 2e5 + 100;
const int B = 9000000 + 1;
const ll INF = 1e18 + 100;
//mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
ll binpow(ll x,ll y,ll md) {
    if(y < 0) return 0;
    if(y == 0) return 1;        
    if(y == 1) return x;
    if(y % 2 == 0) {
        ll now = binpow(x,y/2,md);
        return (1ll*now*now) % md;
    }
    else {
        ll now = binpow(x,y/2,md);
        return (1ll*((1ll*now*now) % md)*x) % md;
    }
}
/*
for(int i = 1;i <= n;i++) sp[0][i] = a[i];
for(int i = 1;i <= log2(n);i++) {
    for(int l = 1;l <= n;l++) {
        int r = l + (1 << i) - 1;
        if(r > n) break;
        int middle = l + (1 << (i - 1));
        sp[i][l] = max(sp[i - 1][l],sp[i - 1][middle]);
    }
}
int get(int l,int r) {
    int g = log2(r - l + 1);
    return max(sp[g][l],sp[g][r - (1 << g) + 1]);
} 
*/

signed main() {
    ios_base::sync_with_stdio(NULL);
    cin.tie(0);
    cout.tie(0);    
    int n,m;
    cin >> n >> m;
    char a[n + 1][m + 1];
    bool was[n + 1][m + 1];
    bool check[n + 1][m + 1][2];
    for(int i = 1;i <= n;i++) {
        for(int j = 1;j <= m;j++) {
            cin >> a[i][j];
            was[i][j] = false;
            check[i][j][0] = false;
            check[i][j][1] = false;
        }
    }
    int ans = 0;
    for(int i = 1;i <= n + m;i++) {
        if(i == m + 1) continue;
        vector <pair <int,int> > v;
        if(i <= m) {
            int x = 1,y = i;
            while(x >= 1&&x <= n&&y >= 1&&y <= m) {
                v.pb({x,y});
                x++;
                y--;
            }
        }
        else {
            int x = i - m,y = m;
            while(x >= 1&&x <= n&&y >= 1&&y <= m) {
                v.pb({x,y});
                x++;
                y--;
            }
        }
        v.pb({1,1});
        reverse(all(v));
        int len = sz(v) - 1;
        int dp[len + 2][3];
        for(int i = 0;i <= len + 1;i++) {
            for(int j = 0;j < 3;j++) {
                dp[i][j] = min1;
            }
        }
        dp[1][0] = 0;
        for(int i = 1;i <= len;i++) {
            for(int j = 0;j < 3;j++) {
                if(j != 0) dp[i + 1][j - 1] = max(dp[i + 1][j - 1],dp[i][j]);
                dp[i + 1][0] = max(dp[i + 1][0],dp[i][0]);
                int nowx = v[i].f,nowy = v[i].s;
                if(a[nowx][nowy] != 'W') continue;
                if(nowx > 2&&a[nowx - 1][nowy] == 'G'&&a[nowx - 2][nowy] == 'R') {
                    dp[i + 1][2] = max(dp[i + 1][2],dp[i][j] + 1);
                }
                if(j == 0) {
                    if(nowy > 2&&a[nowx][nowy - 1] == 'G'&&a[nowx][nowy - 2] == 'R') {
                        dp[i + 1][0] = max(dp[i + 1][0],dp[i][j] + 1);
                    }
                }
            }
        }
        ans+=max({dp[len + 1][0],dp[len + 1][1],dp[len + 1][2]});
        //cout << dp[len + 1][0] << endl;
    }
    cout << ans << endl;
}

    
    
     
    
    

컴파일 시 표준 에러 (stderr) 메시지

dango_maker.cpp: In function 'int main()':
dango_maker.cpp:116:10: warning: variable 'was' set but not used [-Wunused-but-set-variable]
  116 |     bool was[n + 1][m + 1];
      |          ^~~
dango_maker.cpp:117:10: warning: variable 'check' set but not used [-Wunused-but-set-variable]
  117 |     bool check[n + 1][m + 1][2];
      |          ^~~~~

• Subtask 1: 13 / 13
• Subtask 2: 20 / 20
• Subtask 3: 67 / 67